Just my two pennies worth re drugs and nefarious activities:
In a past life, when I was part of a 'party community' I no longer subscribe too, 20 years ago now, but I doubt much has really changed as per the mentality, I remember the main dealer sold a couple GBH and they both ended up on life support. No-one was apparently prepared to 'grass' him up, as he was an 'alright guy' and everyone liked him. He hadn't hurt them on purpose, it was their own fault for taking it in the first place mentality, wrong place wrong time, just one of those things. No-one could care less about the anguish of the family, what it took for those people to recover, or had any kind of responsibility towards seeing the right thing done!! if anything similar did happen to corrie, ie drug deal gone bad, accidental overdose, accident under the influence, altercation with a drug dealer, I'm not convinced that anyone will come forward if they follow the same opinions
as regards walking into a nefarious situation, random things do happen anytime anywhere. I remember walking my dog around the same period through a normal street that was a combination of one/two bedroomed flats and family homes. As my dog and I approached the end of the road /dead end, I saw two large, shiny cars parked alongside each other. As I approached, two men got out the car on the right, wearing, I kid you not, black suits, black ties and black shades, 1 was carrying a briefcase. Then out the car alongside, stepped another two men, also wearing black suits, black ties and black shades, 1 carrying a briefcase. The car on the right popped its boot open, and both men placed their respective briefcases in the boot. I just remember feeling completely bemused by the scene that seemed like something out of Reservoir dogs!! The 4 men turned to stare at me as I walked past, Christ knows what was going on, but nothing good I can tell you. So bizarre things can happen at random in the most unexpected places, this was at 6pm on a weekday evening!
I'm torn between the above, ie him walking into something totally unexpected; a drug deal gone bad; overdose, accident under the influence; accident ie he was having a pee, stepped out from behind the bins straight into the path of a car pulling out from the area, got hit, they paniced as they were up to something illegal and it just got worse from there; jumping onto the back of the lorry for a lift after it had weighed its bins and jumping off somewhere on the way home and having an accident, so the driver never knew he was there; or collected by a friend/taxi, dropped off and having an accident on the way trying to get home, and someone feeling guilty as hell but not wanting to come forward in case they're implicated because they left him, when really they shouldn't have as they knew he was not in a fit state. So many possible theories......